Dr. Spa Posted December 23, 2011 Report Share Posted December 23, 2011 As there seems to be lack of understanding, I thought I'd take some time to post a sticky explaining how ozonation works in a spa. The process is very basic, and in the vast majority of spas, consists of only four very basic components. The OZONATOR - This is a devise that, when electrical power is applied too, converts some of the oxygen in the air contained within it, into OZONE. This can be done through either a process called Corona Discharge, or with a specific frequency ultraviolet light. VERY IMPORTANT! - ALL, it does is convert some of the oxygen within it into ozone. It does NOT push, pull, pump or move this now ozonated air! The CHECK VALVE - This is a one way valve that prevents spa water from backing up into the ozonator. The OZONE TUBING - This is the "pipe" that the ozone travels through. The INJECTOR - The INJECTOR works off a principle called "Venturi". Without going into the entire scientific explanation, when water flows through it, it creates a vacuum (some spas use a dedicated jet, which has this venturi design built into it). This vacuum pulls air through the OZONE TUBING, through the CHECK VALVE and through the OZONATOR. The INJECTOR will pull air through it, any time there's water flowing through it, regardless of whether or not the OZONATOR is producing ozone. Quote Link to comment Share on other sites More sharing options...
walleye Posted December 25, 2011 Report Share Posted December 25, 2011 What determines the amount of Ozone gas that is supplied? Speed of water flow power of the venturi effect? How is it regulated? Quote Link to comment Share on other sites More sharing options...
waterbear Posted December 25, 2011 Report Share Posted December 25, 2011 Most spa ozone injectors are UV, which is not very efficient, so the amount of ozone produced is small (in the neighborhoold of 10% of a CD system), particularly after they have been in use for a few months. In reality it is more of a sales 'gimmick' than an actual adjunct to spa maintenance, IMHO. CD systems tend to be a bit more complicated since they usually include a drying chamber (if they do not their ozone generation can actually be lower than a UV unit and, once again, become a sales gimmick!) and they product a much higher ozone output. However, they are more expensive and not as common. Quote Link to comment Share on other sites More sharing options...
Onsen Posted March 3, 2012 Report Share Posted March 3, 2012 I have a 2009 Jacuzzi J480 with their optional CD Ozonator installed. What do I need to do to maintain it/ensure it is working effectively? -Matthew Quote Link to comment Share on other sites More sharing options...
ssalv Posted March 15, 2012 Report Share Posted March 15, 2012 My manual says to clean the tubes every 6 months and an acid ( forget what type ) will form and needs to be neutralized. Check your manual for routine maintance. Quote Link to comment Share on other sites More sharing options...
twin43 Posted September 30, 2012 Report Share Posted September 30, 2012 Ozonators are dangerous as are vaccines! Hot tubs are not deep enough for the free radicals to all bind. Ozone gas forms between the water and cover. Look what it does to the tub cover..Imagine what it does to our lungs...... Quote Link to comment Share on other sites More sharing options...
waterbear Posted September 30, 2012 Report Share Posted September 30, 2012 This forum is not the place to discuss vaccination but let it be said that many childhood illnesses that had all but disappeared are on the up rise again because people are afraid to vaccinate their children and that all the Wakefield rubbish about vaccination and autism has been disproven, the Lancet published a full retraction, and Wakefield was found guilty of professional misconduct and can no longer practice medicine! As far as ozone, yes it is a toxic gas but if properly introduced into the spa (which is usually is not) it will only be in the reaction chamber and not in the water in the spa vessel. However, as I stated above ozone, and UV for that matter, in the way they are usually implemented are really more of a sales gimmick than something that actually does anything! That being said, I am not a fan of ozone, particularly if the sanitizer is chlorine since it tends to destroy chlorine (and vice versa) and can actually increase chlorine demand. It is some use in a very high usage (read commercial) spa that have a persistent combined chlorine problem. UV can also be useful in this circumstance but in a residential spa they are a waste of money, IMHO. Ozone can be of limited usefulness with bromine since it will oxidize bromide into hypobromous acid but it also tents to convert bromide into non renewable bromate, decreasing the bromide 'bank' in the water. A common misconception about ozone (and UV for that matter is that they will allow you to run a lower halogen sanitizer level than without. This is not true. They might reduce your sanitizer demand (the amount of sanitizer needed to maintain the desired level) but the do NOT allow you to run a lower level of sanitizer and have properly sanitized water. In a low usage spa the sanitizer demand can actually increase. Quote Link to comment Share on other sites More sharing options...
M_nelsen Posted December 2, 2012 Report Share Posted December 2, 2012 what about the new Jacuzzi and sundance clearray system versus standard ozonator? Quote Link to comment Share on other sites More sharing options...
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